GM engineers use PTM system to keep the power coming to the car when it lands after getting airborne on a jump.

Performance Traction Helps Camaro Z/28 Soar on Track

Algorithm helps maintain momentum for faster lap times

Courtesy General Motors

Engineers call it “flying car” logic. On the 2014 Chevrolet Camaro Z/28, the Performance Traction Management system delivers faster lap times on an undulating race track by helping maintain the car’s full power and momentum even if the tires briefly lose contact with the ground, in certain track conditions.

Created for track use only, the “flying car” logic woven into the Z/28’s standard PTM system integrates the chassis mode selection, Traction Control and Active Handling Systems. Each is tuned specifically in the Z/28 for optimal track performance and consistency, and is activated by the driver pressing a button in the center console.

Without “fly car logic”, the PTM would interpret the force reduction on the tires as a loss of traction and reduce torque to restore it. Such an intervention would likely slow the car and reduce momentum.

“PTM uses torque, lateral acceleration and rear-axle wheel slip to define the amount of traction control required, but when the car clears a rise on the track, it normally wants to decrease torque to increase traction,” said Bill Wise, Camaro Z/28 vehicle performance engineer. “The unique logic in the system uses the ride-height sensors to determine the reduction in force on the tires that’s unique to track driving and allows the car to continue with uninterrupted momentum and, ultimately, a better lap time.”